1&period; The machine is used to mill grooves at the bending of aluminum plastic composite panel&period;2&period; The machine can mill both at horizontal and at vertical direction&period;3&period; There are the brackets at the middle and bottom to process different sizes&period;4&period; In the horizontal direction there is the segmented positioning device and lock device for any point&period;5&period; In the vertical direction there is multi-point positioning device and lock device for any point&period;6&period; The cutter is specially designed and can adjust as per the milling depth&period;